I'm looking at free social networking scripts again, see if there is a suitable free one I can create a membership club from.
http://www.hotscripts.com/category/php/scripts-programs/virtual-communities/
I usually end up getting pointed in google to hotscripts.com - I've been using them as a trusted source of web gadgets for years, there are often dead links, so a one click 'report a dead link' button on their site would be useful - i.e I click a button and a message is sent "oi you have a dead link on blah blah page' - rather than filling out a form and going into details! - if they already have this it is a feature a regular browser hasn't seen clearly enough - so a newsletter/blog pointing out functions - is lacking in engagement for my busy eyes.
Embedding a conversation into a blog post is just as easy as embedding a YouTube video. Just paste the following code into your blog post HTML, then the conversation and all replies can be viewed in real-time, right from your blog!
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